EP 3948335 A4 20230405 - DISTANCE MEASUREMENT SYSTEMS AND METHODS
Title (en)
DISTANCE MEASUREMENT SYSTEMS AND METHODS
Title (de)
ABSTANDSMESSSYSTEME UND -VERFAHREN
Title (fr)
SYSTÈMES ET PROCÉDÉS DE MESURE DE DISTANCE
Publication
Application
Priority
- US 201962826666 P 20190329
- US 2020020218 W 20200227
Abstract (en)
[origin: WO2020205108A1] A laser scanner can include a light source to output laser pulses, and an optical sensor to generate analog signals, having a first dynamic range, from light of the laser pulses that is reflected by an object. A logarithmic amplifier can amplify the analog signals to have a second dynamic range that is smaller than the first dynamic range. An analog to digital converter can convert the analog signals to digital signal samples having a signal sample rate. A template can represent an expected return reflection signal, and can have a template sample rate that is higher than the signal sample rate. A processor can perform a cross-correlation between the digital signal samples and the template, determine a time-of-flight value based at least in part on the cross-correlation, and determine a distance to the object based at least in part on the time-of-flight value.
IPC 8 full level
G01S 7/4865 (2020.01); G01S 7/48 (2006.01); G01S 7/481 (2006.01); G01S 7/4861 (2020.01); G01S 7/489 (2006.01); G01S 7/497 (2006.01); G01S 17/04 (2020.01); G01S 17/06 (2006.01); G01S 17/10 (2006.01); G06F 17/15 (2006.01); H03G 3/00 (2006.01); H03G 3/30 (2006.01); H03M 1/06 (2006.01); G01S 17/42 (2006.01); H03G 7/00 (2006.01); H03M 1/12 (2006.01)
CPC (source: EP US)
G01S 7/4808 (2013.01 - EP); G01S 7/4817 (2013.01 - EP); G01S 7/4861 (2013.01 - EP US); G01S 7/4865 (2013.01 - US); G01S 7/4866 (2013.01 - EP); G01S 7/489 (2013.01 - EP); G01S 7/497 (2013.01 - EP); G01S 17/04 (2020.01 - EP); G01S 17/10 (2013.01 - EP US); G01S 17/46 (2013.01 - US); H03G 3/3084 (2013.01 - EP); G01S 17/42 (2013.01 - EP); H03G 7/001 (2013.01 - EP); H03M 1/1235 (2013.01 - EP US)
Citation (search report)
- [YA] US 2004051859 A1 20040318 - FLOCKENCIER STUART W [US]
- [YA] US 10243544 B1 20190326 - GUTNIK VADIM [US]
- [Y] US 2015285912 A1 20151008 - HAMMES MARKUS [DE]
- [A] DE 102017109150 A1 20181031 - VALEO SCHALTER & SENSOREN GMBH [DE]
- [Y] US 2018172801 A1 20180621 - SCHRATTENECKER JOCHEN O [AT], et al
- See references of WO 2020205108A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020205108 A1 20201008; CN 113661409 A 20211116; EP 3948335 A1 20220209; EP 3948335 A4 20230405; JP 2022527913 A 20220607; JP 7279816 B2 20230523; US 2022187456 A1 20220616
DOCDB simple family (application)
US 2020020218 W 20200227; CN 202080025761 A 20200227; EP 20784600 A 20200227; JP 2021557589 A 20200227; US 202017598776 A 20200227